<!--
 * @Author: your name
 * @Date: 2021-08-10 10:24:11
 * @LastEditTime: 2021-08-10 10:27:36
 * @LastEditors: Please set LastEditors
 * @Description: In User Settings Edit
 * @FilePath: \briup\3-html&css\day07\03-边框盒子.html
-->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>边框盒子</title>
    <style>
        span {
            display:inline-block;
            box-sizing:border-box;
            margin:50px;
            width:200px;
            height:200px;
            border:20px solid red;
            padding:50px;
        }
    </style>
</head>
<body>
    <span>内容区域</span>
    <span>内容区域</span>
    <span>内容区域</span>
    <span>内容区域</span>
</body>
</html>